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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 15 (Engine Mechanical - Hybrid (LZ1) - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Engine Noise Under Load

Engine Noise Under Load

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Engine Noise Under Load

Cause Correction
Review the system operation in order to familiarize yourself with the system functions. As required, disable the auto-stop function prior to repair. Refer to Hybrid Modes of Operation Description .
Low oil pressure
  1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .
  2. Repair or replace components, as required.
Detonation or spark knock Verify the correct operation of the ignition controls. Refer to Symptoms - Engine Controls .
Loose flex plate-to-dampener bolts
  1. Inspect the dampener bolts and flex plate.
  2. Repair, as required.
Cracked flex plate - automatic transmission
  1. Inspect the flex plate bolts and flex plate.
  2. Repair, as required.
Excessive connecting rod bearing clearance Inspect the following components and repair, as required:
  • The connecting rod bearings
  • The connecting rods
  • The crankshaft
Excessive crankshaft bearing clearance Inspect the following components and repair, as required:
  • The crankshaft bearings
  • The crankshaft journals
  • The cylinder block crankshaft bearing bore
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